What is the valuation method if a borrowed item is completely destroyed after its usage-degrading parts have been consumed?
General Chapter
Al-Mughni
Book of Loan for Use
Primary text
If the item is destroyed after the consumption of its degrading parts, the valuation is determined based on its condition at the time of destruction. This is because the parts consumed were lost under authorized permission and thus are not subject to guarantee, making it impermissible to calculate their value against the borrower.
Supporting text
If the ruling requires guaranteeing the usage-degrading parts, the valuation of the item should be assessed before those parts were diminished.